(<=>
(and
(instance ?PM ParticulateMatter)
(part ?P ?PM)
(approximateDiameter ?P
(MeasureFn ?S Micrometer))
(greaterThan 10 ?S)
(greaterThan ?S 2.5))
(exists (?PM10)
(and
(instance ?PM10 CoarseParticulateMatter)
(part ?PM10 ?PM)))) 
Geography.kif 67906801 
An object is an instance of PM and a self connected object is a part of the object and the approximate diameter of the self connected object is a real number micrometer(s) and 10 is greater than the real number and the real number is greater than 2.5 if and only if there exists the object10 such that the object10 is an instance of PM10 and the object10 is a part of the object 
(<=>
(and
(instance ?PM ParticulateMatter)
(part ?P ?PM)
(approximateDiameter ?P
(MeasureFn ?S Micrometer))
(greaterThanOrEqualTo ?S 2.5))
(exists (?PM25)
(and
(instance ?PM25 FineParticulateMatter)
(part ?PM25 ?PM)))) 
Geography.kif 68196829 
An object is an instance of PM and a self connected object is a part of the object and the approximate diameter of the self connected object is a real number micrometer(s) and the real number is greater than or equal to 2.5 if and only if there exists the object25 such that the object25 is an instance of PM2.5 and the object25 is a part of the object 
(=>
(and
(instance ?HAZE AtmosphericHazing)
(eventLocated ?HAZE ?AREA)
(instance ?AREA AtmosphericRegion)
(instance ?PARTICULATE ParticulateMatter)
(locatedAtTime ?PARTICULATE
(WhenFn ?HAZE) ?AREA)
(visibilityInMeteorology ?AREA
(WhenFn ?HAZE)
(MeasureFn ?VISIBILITY Kilometer)))
(and
(greaterThan ?VISIBILITY 2)
(lessThan ?VISIBILITY 5))) 
Weather.kif 9921005 

(=>
(instance ?PM ParticulateMatter)
(exists (?P ?ATMOSPHERE ?S)
(and
(instance ?ATMOSPHERE AtmosphericRegion)
(located ?PM ?ATMOSPHERE)
(part ?P ?PM)
(approximateDiameter ?P
(MeasureFn ?S Micrometer))
(greaterThan 1000 ?S)))) 
Geography.kif 67636772 
